Maybe...but I can't really think of any non-celebrity in an on-attraction human role that has served any better than if it were a recognizable face. I really don't think it matters much because generally if that ever happens (with some exception like MB) they're really just part of a pre-show before they send you along your way. If the whole attraction was their face though, I do see how that could be problematic.
To me, where you run into the issues, is when the celebrity is playing themselves -- i.e. Ellen's Energy. Because in cases like that, they're generally wearing current-day fashion and not covered up in special fx makeup so that when you see them in the attraction 10+years later it all feels extremely out of date and instantly makes everything feel a bit dusty and old.
Superheroes I think have a little more flexibility there due to the costumes and makeup that do a good job of concealing who they are, unless you're Chris Pratt and pretty much playing himself.